8. A man sold a book at a loss of 20%. If he had sold the book for 12 more, he would have gained 10%.
Find the cost price of the book.
40%?
9. A trader sells
Answers
Answer:
Answer 8
Step-by-step explanation:
Cost Price of the Article is Rs. 40
Step-by-step explanation:
Given:
A man sold an article at 20% loss
If he sell the article for Rs. 12 more then the profit % is 10%
To find: The cost price of the article.
Let the Cost Price of the article = x
So, Selling\:Price=x-\frac{20}{100}\times x=x-\frac{x}{5}=\frac{4x}{5}SellingPrice=x−
100
20
×x=x−
5
x
=
5
4x
New SP = 4x/5 + 12
According to the Question,
10=\frac{\frac{4x}{5}+12-x}{x}\times10010=
x
5
4x
+12−x
×100
\frac{\frac{4x}{5}+12-x}{x}=\frac{1}{10}
x
5
4x
+12−x
=
10
1
\frac{4x}{5}+12-x=\frac{x}{10}
5
4x
+12−x=
10
x
\frac{4x}{5}-x-\frac{x}{10}=-12
5
4x
−x−
10
x
=−12
\frac{8x}{10}-\frac{10x}{10}-\frac{x}{10}=-12
10
8x
−
10
10x
−
10
x
=−12
\frac{8x-10x-x}{10}=-12
10
8x−10x−x
=−12
\frac{-3x}{10}=-12
10
−3x
=−12
x=-12\times\frac{10}{-3}x=−12×
−3
10
x=40x=40
Therefore, Cost Price of the Article is Rs. 40
Answer:
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